Lamp.



PATENTED NOV. 1, 1904.

- J. M. PFAUDLER.

LAMP.

APPLICATION FILED NOV. 24. mos.

N0 MODEL.

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NITED STATES PATENT Patented November 1, 1904.

Prion,

JOHN M. PFAUDLER, OF ROCHESTER, NEW YORK, ASSIGNOR OF TEI SIXTEENTHS TO.EUGENE M. STROUSS AND ISAAC STERN, OF ROCHESTER, NEI/V YORK, AND HERBERTWILE, OF NEW YORK, N. Y.

LAMP.

SPECIFICATION forming part of Letters Patent No. 773,980, dated November1, 1904. Application filed November 24., 1903. Serial No. 182,535. (tomodel.)

To 00% whom, it may concern:

Be it known that I, JOHN M. PFAUDLER, of Rochester, in the county ofMonroe and State of New York, have invented certain new and usefulImprovements in Lamps; and I do hereby declare the following to beafull, clear, and exact description of the same, reference being had tothe accompanying drawings, forming a part of this specification, and tothe reference-numerals marked thereon. 7

My present invention relates to lamps, and particularly to that classknown as centraldraft lamps; and it has for its object to provide a newand improved form of burner therefor whereby air may be supplied to boththe inner and outer sides of the flame in such a manner as to support afree combustion to produce an increased amount of illumination inproportion to the size of the wick employed and the quantity of oilconsumed over that heretofore obtained.

My invention has for its further object to provide a wick-raising devicesupported on the burner, the parts of which are so arranged that thelamp-wicks may be easily removed and inserted and when in position maybe readily adjusted to produce an evenly-burning flame of any desiredheight.

To these and other ends the invention consists in certain improvementshereinafter described, the novel features being pointed out particularlyin the claims at the end of this specification.

In the drawings, Figure 1 is a cross-sectional view of the lamp,illustrating a burner constructed in accordance with my invention. Figs.2 and 3 are detail views of modified forms of flame-spreaders, and Fig.L is a perspective view of the wick-raising device.

In illustrating my invention I have shown it applied to a lamp having afont or oil-pot 1, through which extends the central drafttube 2. Thetop of the font is closed by a screw-threaded collar 3, which supportsthe wick-tube 4, and guided in the latter is the wick-raising device inthe form of a frame or sleeve 5. Near the upper end of the sleeve areprovided a plurality of spring-fingers 6, having spring-arms todisengage the prongs from the wick. The heads or projections extendingoutwardly and the lower edge of the annular recess being rounded, asshown, the teeth or prongs on the arms will be held embedded in thewick, and as there are several arms supported on the sleeve, whichengage the wick at different points, it will be raised evenly at allpoints of its circumference. The vertical adjustment of the sleeve 5 isaccomplished by means of a pinion 10, mounted upon the end of a shaft 11and provided with a knurled head 12. Engaging with the pinion andextending through the guiding-apertures formed in the collar 3- is arack bar 15, the lower end of which 'is attached to the sleeve 5, sothatthe latter will be moved to adjust the height of the wick when thehead 12 is revolved.

Threaded on the upper end of the collar 3 is a supporting-frameembodying the upper and lower rings. 16 and 17, which are connected bythe perforated wall 18. Surmounting the body is the chimney-gallery 19,provided with the spring-fingers for holding the chim ney, which may beof the usual or any preferred construction. The chimney gallery may beadapted to be moved vertically to afford access to the end of the wickwhen it is desired to light the lamp, and in the present instance I haveshown it provided with a skeleton frame 20, similar to that illustratedin my former patent, N 0. 645,006, granted March 6, 1900, and whichembodies spiral cam-tracks 21, cooperating with pins (not shown) on thering 16, whereby as the chimney-gallery is revolved the chimney andparts mounted on the gallery will be elevated, as will be understood.

The chimney-gallery surrounds the wicktube and is separated therefrom toform an air space or channel 22, leading into the burners. v p 7% MI capsupported on the gallery 19. This cap consists of an upwardly-extendingwall 23, provided at the upper end with a flange 24, extending inwardlyover the wick-tube and forming a circular aperture, preferably slightlyless in diameter than the diameter of the wick-tube and which isarranged centrally over the latter. At the inner edge of the flange 24is a downwardly-extending annular rim 30, the lower edge of which isarranged, as shown, somewhat above the upper end of the wick, thepurpose of the burner-cap and the arrangement of the flange 24f on therim 30 being to direct the current of air flowing upwardly through thechannel 22 to the outer surface of the flame, as indicated by thearrows, and the aperture through which the flame passes being smallerthan the wick causes the flame to be drawn inwardly, thereby insuring amore perfect mixing of air with the products of combustion at theoutside of the flame. In order to prevent sudden gusts or drafts frompassing upwardly through the channel 22 to affect the steady burning ofthe flame, I arrange therein a perforated coneshaped plate 31.

The flame is supplied at its inner side with air received through thecentral drafttube 2, and to obtain the desired shape and color of flameI arrange at the upper end of the tube an air-directing head, which isremovably supported upon a pin 32, held by a frame or spider 33, securedin the tube 2. This head embodies a stem 34, provided with alongitudinally-extending aperture into which the pin 32 extends. Theupper end of the stem is reduced, as shown, and supported thereon is adeflector 35, and depending therefrom is a foraminous frustum-shapedwall 36, the upper end of which is arranged inside the rim of thedeflector 37, so that the heated air flowing outward through theperforations in the wall will be directed into contact with the flame.

By employing the burner-cap constructed as before described and theair-directing head shown in Fig. 3 a long'flame maybe obtained which ismore orless pointed at its upper end; but, if desired, the latter may bespread by using an inverted perforated conical spreader 40, mounted onthe stem 41, extending above the deflector 35, and as this spreader maybe employed independently of the air-directing head I have shown in Fig.2 the stem 41 provided at its lower end with a socket 4E3, adapted toengage over the pin 32. This spreader may be employed either singly orin conjunction with the deflecting-head, as shown in Figs. 1 and 3, andwhen so employed the upper end of the flame will be caused to flareoutwardly, as shown in full lines in Fig. 1.

A burner constructed in accordance with my invention, in which theburner-cap and. air-directing head form a more or less restrictedpassage through which the flame is emitted and said parts being arrangedin such a manner as to cause the currents of air to impinge both uponthe outer and inner sides of the flame, the products of combustion whichform the latter will be thoroughly mixed therewith, producing a luminousflame of great brilliancy.

I claim as my invention- 1. In a lamp, the combination with a centraldraft-tube and the outer wick-tube, of a cap extending inwardly over thelatter, a support therefor, and an air-directing head arranged centrallyof the draft-tube below the top of the cap.

2. In a lamp-burner, the combination with a central draft-tube, an outerwick-tube and a wick arranged between them, a cap surrounding thewick-tube and extending inwardly over the wick, a support for the cap,and an air-directing head arranged centrally of the draft-tube below thetop of the cap.

3. In a lamp-burner, the combination with a central draft-tube and anouter wick-tube, of a burner-cap having a wall surrounding the wick-tubeand separated therefrom to form an air-space, means for supporting it,an inwardly-extending flange at the upper end of the wall and a rim onthe flange extending toward the wick-tube.

4c. In a lamp-burner, the combination with a central draft-tube and anouter wick-tube, of a burner-cap surrounding the latter and separatedtherefrom to form an air-space and having a central aperture smaller indiameter than that of the wick-tube, a depending flange surrounding theaperture, a support for the cap, and an air-directing head arrangedcentrally of the draft-tube.

5. In a lamp-burner, the combination with a central draft-tube and anouter wick-tube, of a burner-cap surrounding the latter and separatedtherefrom to form an air-space having the top located above thewick-tube and provided with a central aperture, a support for the cap,and an air-directing head located between the end of the wick-tube andthe top of the cap.

6. In a lamp-burner, the combination with a central draft-tube and anouter wick-tube, of a burner-cap surrounding the latter and separatedtherefrom to form an air-space having a flange located above thewick-tube and an inwardly-depending rim on said flange, a support forthe cap, and an air-directing head located within the burner-cap.

7. In a lamp-burner, the combination witha central draft-tube and anouter wick-tube, of a burner-cap arranged exteriorly of the wicktube andforming a channel for supplying air to the exterior of the flame, meansfor supporting it and a head arranged at the upper end of the centraldraft-tube within the burnercap and smaller in diameter than saiddrafttube.

8. In a lamp-burner, the combination witha central draft-tube, an outerWick-tube, a burner-cap surrounding the latter and a support therefor,of a head arranged at the end of the draft-tube and embodying adeflector and a foraminous wall depending therefrom smaller in diameterthan said draft-tube.

9. In a lam p-burner, the combination with a central draft-tube, anouter Wick-tube, a burner-cap surrounding the latter and a supporttherefor, of a deflector arranged above the end of the draft-tube andsmaller in diameter that said tube and a foraminous wall depending fromthe deflector and having its upper end arranged within the outer edge ofthe deflector.

10. In a lamp-burner, the combination with a central draft-tube, anouter wick-tube, a burner-cap surrounding the latter and asupporttherefor, of an air-directing head located above the draft-tube andsmaller in diameter than said tube and embodying a perforated wall, anda deflector-plate surmounting the latter and having the edges extendingbeyond said wall.

11. In a lamp-burner, the combination with a central draft-tube, anouter wick-tube, a burner-cap surrounding the latter and a supporttherefor, of a hollow frustum-shaped airdirecting head located at theupper end of the draft-tube, said head having the foraminous wall and an0utwardly-extending rim at the upper end of the wall smaller in diameterthan said drafttube;

12. In a lamp-burner, the combination with a central draft-tube, anouter wick-tube, a cap surrounding the latter having a flange andprovided with an inwardly-extending rim and means for supporting thecap, of an air-deflecting head located between the end of the draft-tubeand the cap.

13. In a lamp-burner, the combination with a central draft-tube, anouter wick-tube, a cap surrounding the latter having a flange extendingover the wick-tube and means for supporting it, of an air-deflectinghead located within the cap and a spreader arranged above the latter.

14:. In a lamp-burner, the combination with a central draft-tube, anouter wick-tube, a cap surrounding the latter having a flange locatedabove and extending inwardly over the wicktube and means for supportingthe cap, of an air-deflecting head arranged within the cap andcooperating with the flange thereon to form a flame-passage and aspreader located above the head and arranged to deflect the flameemitted from said passage.

15. In a lamp-burner, the combination with a central draft-tube, anouter wick-tube, a cap surrounding the latter having a flange locatedabove and extending inwardly over the wicktube and means for supportingthe cap, of an air-deflecting head arranged within the cap having thedownwardly-extending perforated wall and a perforated flame-spreaderlocated JOHN M. PFAUDLER.

- above the head.

Witnesses:

EUGENE M. STRoUss, G. WILLARD RICH.

